wait-on
wait-on is a cross platform command line utility and Node.js API which will wait for files, ports, sockets, and http(s) resources to become available
xdg-portable
Determine XDG Base Directory paths (OS/platform portable)
is-png
Check if a Buffer/Uint8Array is a PNG image
xdg-app-paths
Determine (XDG-compatible) paths for storing application files (cache, config, data, etc)
os-paths
Determine common OS/platform paths (home, temp, ...)